Dashboard not working

[ygd]

I'm using Java, my code for the Dashboard looks like this:

Dashboard lowDashData = DriverStation.getInstance().getDashboardPackerLow();

        lowDashData.addCluster(); {
            lowDashData.addCluster(); {
                lowDashData.addDouble(j1.getX());
                lowDashData.addDouble(j1.getY());
            } lowDashData.finalizeCluster();

            lowDashData.addCluster(); {
                lowDashData.addDouble(j2.getX());
                lowDashData.addDouble(j2.getY());
            } lowDashData.finalizeCluster();
        } lowDashData.finalizeCluster();

        lowDashData.commit();
        System.out.println("Dashboard updated");

Where j1 is the left joystick and j2 is the right joystick.

When I run my code, this shows up on the classmate:

Warning: The Dasboard Datatype used thy the robot project and this dashboard do not match. See Diagram for more details.

What's going on here and how can I fix it?